Which make is the laptop , just go to there website , type in the model nr , and it should give you all the available updates including Bios ( which should be updates since you updated from win 8 to 10.
Laptop should be fine 3rd generation intel more than enough for Win 10 ,remove some of the windows 10 bloatware .

In the device manager , under the wifi properties check if the 802.11n setting is set to auto .

Best advice wipe the laptop , install clean windows 10 from bootable USB drive , these auto updates always gives problems